3a- Scientific method

Question 1

What are the four stages in the scientific cycle?

Answer 1

• constructing a testable hypothesis
• experimental design
• gathering, recording and analysis of data from experiment
• evaluation of results and conclusion

Question 2

What does the null hypothesis propose?

Answer 2

That there will be no statistically significant effect as a result of the experiment treatment

Question 3

When is the null hypothesis rejected?

Answer 3

If there is evidence for an effect, unlikely due to chance

Question 4

When do scientific ideas become accepted?

Answer 4

Only when they have been checked independently

Question 5

How should repetition of an experiment be done?

Answer 5

At a different time with a completely new set of ingredients, organisms and chemicals